Let y= years ago when dad's age was 4 times son's age
60-y=4(30-y)
60-y=120-4y
-y+4y=120-60
3y=60
y=60/3
y= 20 years ago
Then 30-20= 10 yrs. old, the boys age when his dad was 40 years old.
Answer:
Slope = -2/3 (Answer choice "a.")
Step-by-step explanation:
Answer:
Iyubtkmouytu6=-4oyveqhonyrxjojyfervjjf-_/52.5
I = prt
I = 13,000(0.0775)(1.5)
Note: t = time in years. We know that 18 months is 1.5 years.
I = $1,511.25